McMaster-Carr logo
    Filter by
    Material
    Pipe Size
    Industrial Info Compare
    Pressure Class
    Industrial Info Compare
    Fitting Connection
    Industrial Info Compare
    Fitting Type
    Industrial Info Snippet
    Fitting Material
    Maximum Steam Pressure @ Temperature
    Flanged Connection Surface
    Bolt Hole Diameter
    Attribute Image
    Number of Bolt Holes
    Thread Type
    Connects To
    Pipe Material
    Bolt Circle Diameter
    Attribute Image
    Fitting Finished Material
    Flange Construction
    Pressure Rating
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Industrial Info Snippet
    Bolt Diameter
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    5 Products
    About Pipe and Fittings
    industrial info icon

    Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

    Low-Pressure Brass and Bronze Threaded Pipe Flanges

    Also known as Pressure Class 150 flanges, these are designed for low-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. Flanges have good corrosion resistance. To adhere to safety standards for drinking water systems, use flanges that meet NSF/ANSI 61.
    Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. Low-Pressure Brass and Bronze Threaded Pipe Flanges, Flanges, Threaded Fitting Connection, Female, Flanged Fitting Connection, Flat Surface.
    Image of Product. Flat Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Brass and Bronze Threaded Pipe Flanges, Flanges, Threaded Fitting Connection, Female, Flanged Fitting Connection, Flat Surface.

    Front

    Flat Surface

    on Back

    Pipe
    Size
    Bolt
    Hole
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    BSPT Female
    1/2
    		1/2
    		Flat3 1/2"1/2"5/8"42 3/8"150
    		Bronze200 psi @ 72° F125 psi @ 400° F4978K194000000
    3/4
    		3/4
    		Flat3 7/8"1/2"5/8"42 3/4"150
    		Bronze200 psi @ 72° F125 psi @ 400° F4978K19500000
    1
    		1
    		Flat4 1/4"1/2"5/8"43 1/8"150
    		Bronze200 psi @ 72° F125 psi @ 400° F4978K196000000
    1 1/2
    		1 1/2
    		Flat5"1/2"5/8"43 7/8"150
    		Bronze200 psi @ 72° F125 psi @ 400° F4978K198000000
    2
    		2
    		Flat6"5/8"3/4"44 3/4"150
    		Bronze200 psi @ 72° F125 psi @ 400° F4978K199000000
     
    back to top